diff --git a/Gemfile b/Gemfile
index 8ef452b..ac4dfe2 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,7 +7,7 @@ git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 gemspec
 
 group :test do
-  gem "rspec", "~> 3.12"
+  gem "rspec", "~> 3.13"
   gem "values", "~> 1"
 end
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 41f706e..ec6d90c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -18,7 +18,7 @@ GEM
   specs:
     ansi (1.5.0)
     ast (2.4.2)
-    diff-lcs (1.5.0)
+    diff-lcs (1.5.1)
     docile (1.4.0)
     dokaz (0.0.5)
       ansi
@@ -35,19 +35,19 @@ GEM
     regexp_parser (2.8.0)
     rexml (3.2.5)
     rouge (4.1.0)
-    rspec (3.12.0)
-      rspec-core (~> 3.12.0)
-      rspec-expectations (~> 3.12.0)
-      rspec-mocks (~> 3.12.0)
-    rspec-core (3.12.1)
-      rspec-support (~> 3.12.0)
-    rspec-expectations (3.12.2)
+    rspec (3.13.0)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.0)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.12.0)
-    rspec-mocks (3.12.3)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.12.0)
-    rspec-support (3.12.0)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.1)
     rubocop (1.51.0)
       json (~> 2.3)
       parallel (~> 1.10)
@@ -98,7 +98,7 @@ DEPENDENCIES
   panolint-ruby!
   rake
   redcarpet (~> 3.6)
-  rspec (~> 3.12)
+  rspec (~> 3.13)
   simplecov
   simplecov-cobertura
   values (~> 1)